Living with her daughter-in-law for a year, Mari has been enjoying a peaceful daily life. However, she had one problem: her husband was experiencing erectile dysfunction and their nightlife had become non-existent. Recently, she had been using exercise to distract herself from the loneliness, but when she found out that her son-in-law Yasuo had a huge penis, the dormant desires within her began to stir… Day and night, Mari flaunted her voluptuous body to tempt him. Unable to resist her provocation, Yasuo's massive penis, pent up from their sexless life, exploded...
